6650-00-026-8136 LENS,OPTICAL INSTRUMENT Index 6650-00-026-8139 HOLDER,MIRROR

National Stock Number:
6650-00-026-8137

Federal Supply Class:
6650

National Item Identification Number:
000268137

Description:
LENS,OPTICAL INSTRUMENT

Detail:
An unmounted, transparent, color free lens which may be treated with a low reflection coating to increase light transmission. Includes single and compound elements. For items having two plane parallel surfaces, see WINDOW, OPTICAL INSTRUMENT. Excludes RETICLE, OPTICAL INSTRUMENT.


Manufacturer Information:
799597-110001NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER
799597-153711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
ELEMENT LEFT SURFACE RADIUS-0.985 INCHES AND 2.165 INCHES AND 0.985 INCHES
ELEMENT RIGHT SURFACE RADIUS-0.985 INCHES AND 0.985 INCHES AND 2.165 INCHES
ABBE CONSTANT63.500 AND 36.200
AXIAL THICKNESS0.492 INCHES NOMINAL AND 0.074 INCHES NOMINAL
BACK FOCAL LENGTH3.729 INCHES
COMPOUND LENS EDGE THICKNESS0.835 INCHES NOMINAL
COMPOUND LENS OVERALL AXIAL THICKNESS1.058 INCHES NOMINAL
COMPOUND LENS STYLETRIPLET
DIAMETER1.377 INCHES NOMINAL
EQUIVALENT FOCAL LENGTH4.112 INCHES
FRONT FOCAL LENGTH3.729 INCHES
INDIVIDUAL LENS STYLEDOUBLE CONVEX AND DOUBLE CONCAVE
MATERIAL DOCUMENT AND CLASSIFICATIONJAN-G-174, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE
MATERIALGLASS OPTICAL
REFRACTION INDEX1.5110 NOMINAL AND 1.6210 NOMINAL


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